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All results from a given calculation for C5H5 (cyclopentadienyl radical)

using model chemistry: CCD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2V 2B1

Conformer 1 (D5H)

Jump to S1C2
Vibrational Frequencies calculated at CCD/6-311G**
Rotational Constants (cm-1) from geometry optimized at CCD/6-311G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CCD/6-311G**
 hartrees
Energy at 0K-192.925835
Energy at 298.15K-192.930676
HF Energy-192.235248
Nuclear repulsion energy148.610375
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCD/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3283 3136 0.51      
2 A1 3272 3125 8.77      
3 A1 3244 3098 1.01      
4 A1 1605 1533 0.10      
5 A1 1497 1429 2.28      
6 A1 1168 1116 0.68      
7 A1 1104 1054 9.67      
8 A1 1052 1005 7.49      
9 A1 853 815 0.27      
10 A2 875 835 0.00      
11 A2 826 789 0.00      
12 A2 519 496 0.00      
13 B1 890 850 8.14      
14 B1 729 697 10.43      
15 B1 687 656 101.02      
16 B1 499 477 9.48      
17 B2 6486 6194 102581.20      
18 B2 3252 3106 74.04      
19 B2 3243 3097 30.76      
20 B2 1392 1330 130.36      
21 B2 1311 1252 3.80      
22 B2 1165 1113 0.00      
23 B2 958 915 3.80      
24 B2 863 824 17.21      

Unscaled Zero Point Vibrational Energy (zpe) 20386.2 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 19470.8 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCD/6-311G**
ABC
0.30985 0.28306 0.14793

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.223
C2 0.000 1.123 0.396
C3 0.000 0.681 -1.008
C4 0.000 -0.681 -1.008
C5 0.000 -1.123 0.396
H6 0.000 0.000 2.305
H7 0.000 2.158 0.721
H8 0.000 1.338 -1.869
H9 0.000 -1.338 -1.869
H10 0.000 -2.158 0.721

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10
C11.39492.33302.33301.39491.08142.21563.36903.36902.2156
C21.39491.47232.28632.24652.21461.08442.27473.34483.2972
C32.33301.47231.36192.28633.38212.27401.08272.19503.3240
C42.33302.28631.36191.47233.38213.32402.19501.08272.2740
C51.39492.24652.28631.47232.21463.29723.34482.27471.0844
H61.08142.21463.38213.38212.21462.67674.38254.38252.6767
H72.21561.08442.27403.32403.29722.67672.71594.35074.3158
H83.36902.27471.08272.19503.34484.38252.71592.67694.3507
H93.36903.34482.19501.08272.27474.38254.35072.67692.7159
H102.21563.29723.32402.27401.08442.67674.31584.35072.7159

picture of cyclopentadienyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 108.886 C1 C2 H7 126.206
C1 C5 C4 108.886 C1 C5 H10 126.206
C2 C1 C5 107.264 C2 C1 H6 126.368
C2 C3 C4 107.482 C2 C3 H8 125.128
C3 C2 H7 124.908 C3 C4 C5 107.482
C3 C4 H9 127.391 C4 C3 H8 127.391
C4 C5 H10 124.908 C5 C1 H6 126.368
C5 C4 H9 125.128
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability